Customer Reviews

AOS have completed a boiler replacement and were a pleasure to deal with. Their operatives are polite, courteous, knowledgeable and on-time. I would highly recommend.

Darren,Hertfordshire

The engineers worked extremely hard and did a very good job on the complex installation of our air source heat pump. They were without exception polite, considerate and a pleasure to have working here. All the AOS representatives we came across, on site or otherwise, were helpful and responsive. On…

Bobby Gittins,Bedfordshire

I've just moved out of the area so regrettably won't be able to use AOS any longer We had a monthly pay maintenance contract with them for 15 years. Our old house although new appeared to have inherited a rather flaky boiler that needed 3 PCB replacements…

Zoe Matthews,Hertfordshire

Abbey and Lee installed air source heat pump and radiators and thermostatic valves and new how water cylinder and immersion heater in our home. They were punctual and efficient

David,Milton Kenynes

Good time, keeping, polite, tells you want he is doing, a very nice man. Have recommended him to lady in Park Hill, Ingrid. Clean and tidy.